Are my chances of getting pregnant just as likely if he didn't climax inside me? could the "pre cum" get me pregnant? how likely is it?

See below: Chances of getting pregnant certainly are much greater if ejaculation occurred, especially if around your mid-cycle "fertile window" with ovulation. Also, sometimes men ejaculate semen/sperm without being aware of it. As for "pre-cum", in some men it has been shown to contain viable sperm and, even though in smaller concentrations than in a normal ejaculate, the potential for impregnation exists.